So seeing that the new update requires millions of pearls for upgrading troops, towers and spells I have suggestion for a new “building” type.
Since all the grown ups are fighting and defending/conquering the kids should do something useful also!
So lets inroduce a small lake outside the castle, maybe 1 on each side of the castle near the farms. In this lake we can have the children dive for pearls! and it should work like taverns, upgrading the lake allows more kids to dive thus increasing the pearls per hour.
And since farms and taverns are getting a way to boost its production the lakes should also.
Maybe like : Pay 100 gems to bribe the castle guards to not give the kids bread until they have gathered x amount of pearls like a boost.
Hope we can have something like this